Abstract:
A dual fuel system for a combustion engine includes an air and fuel mixer configured to mix air and fuel provided to the combustion engine, a first fuel path for a first fuel, and a second fuel path for a second fuel. The first and second fuels have different physical and chemical properties. The dual fuel system also includes a common fuel path coupled to the air and fuel mixer and both the first and second fuel paths, wherein the common fuel path includes an electronically controlled valve configured to regulate the air to fuel ratio of an air/fuel mixture provided to the combustion engine in response to control signals from a controller, and both the first and second fuel paths are coupled to the common fuel path at a location upstream of the electronically controlled valve.
Abstract:
A dual fuel connector separately supplies two different fuels to fluidly isolated fuel passages within a fuel injection valve of an internal combustion engine. The dual fuel connector comprises a body with separate fluid connections to the first fuel inlet, the second fuel inlet, a first fuel rail and a second fuel rail. A first fuel passage within the body is in fluid communication with the first fuel rail and the first fuel inlet. A second fuel passage within the body is in fluid communication with the second fuel rail and the second fuel inlet, and wherein the first fuel passage is fluidly isolated from the second fuel passage. The dual fuel connector supplies two different fuels to a fuel injection valve, for engines that are not designed with a cylinder head that has internal bores that can serve as fuel rails.
Abstract:
Engine management system for operation of a direct injection spark ignition gasoline engine. The system includes a gasoline engine, a source of gasoline and a source of an anti-knock agent. Gasoline and anti-knock agent are introduced into a proportioning valve that delivers a selected mixture of gasoline/anti-knock agent to a high pressure pump. At least one injector receives the selected mixture from the high pressure pump and delivers the mixture into a cylinder of the engine. The engine management system provides a rapidly variable mixture of directly injected anti-knock agent and gasoline which prevents knock as the engine torque increases.
Abstract:
Engine management system for operation of a direct injection spark ignition gasoline engine. The system includes a gasoline engine, a source of gasoline and a source of an anti-knock agent. Gasoline and anti-knock agent are introduced into a proportioning valve that delivers a selected mixture of gasoline/anti-knock agent to a high pressure pump. At least one injector receives the selected mixture from the high pressure pump and delivers the mixture into a cylinder of the engine. The engine management system provides a rapidly variable mixture of directly injected anti-knock agent and gasoline which prevents knock as the engine torque increases.
Abstract:
Die Erfindung geht aus von einer dieselmotorisch betriebenen Brennkraftmaschine für den Betrieb mit verschiedenen Kraftstoffen unterschiedlicher Siedepunkte und unterschiedlicher Viskositäts-Temperatur-Kennlinien mit einem Kraftstoffkreislauf, der einen Kraftstofftank, eine Kraftstoffförderpumpe, wenigstens einen Kraftstofffilter und einen Rücklauf in den Kraftstofftank aufweist. Erfindungsgemäß ist in dem Rücklauf eine Einrichtung zur Aufteilung des Kraftstoffstroms zu dem Kraftstofftank und/oder dem Kraftstofffilter vorgesehen, wobei die Aufteilung abhängig von der Viskosität des jeweiligen Kraftstoffes so vorgenommen wird, dass der Kraftstofffilter auf eine von dem jeweiligen Kraftstoff abhängige Temperatur aufgeheizt wird.
Abstract:
In einer für den Betrieb mit mehreren unterschiedlichen Kraftstoffen ausgelegten Brennkraftmaschine wird die gesamte Kraftstoff zufuhr aus mindestens zwei Tanks für Kraftstoffe mit unterschiedlichen Fließeigenschaften in einem einzigen Ventilsteuerblock gesteuert. Einer der Kraftstoffe kann erst bei höheren Temperaturen als der andere problemlos eingesetzt und muss daher zunächst aufgeheizt werden. Der Ventilsteuerblock ist einerseits eng am Motorblock der Brennkraftmasσhine und andererseits in der Nähe eines Wärmetauschers angeordnet . Durch den kompakten Aufbau kann sowohl die Wartungs- und Montagefreundlichkeit der Kraftstof fversorgungsanlage verbessert als auch der aufzuheizende Kraftstoff schneller aufgeheizt werden.
Abstract:
The present invention relates to a method for supplying fuel for a motor of a vehicle by a fuel supply system comprising: a first tank (2, 22) for containing a first fuel; supply means (5, 41) for supplying fuel to the motor; a supply line, for allowing said first fuel to pass from said first tank (2, 22) to said supply means (5, 41); a return line, for allowing fuel to pass from said supply means (5, 41) to said first tank (2, 22); a recirculating line (10, 30), connected with said supply line and said return line, for allowing fuel to pass from said return line to said supply line; and valve means (9, 12; 45, 46), configured to selectively direct fuel from said return line to said supply line by said recirculating line (10, 30), or to said first tank (2, 22); wherein said method comprises the steps of controlling the speed vehicle; controlling the vehicle motor load; defining a first threshold value of the vehicle speed; defining a second threshold value for the vehicle motor load; letting said first fuel passing from said first tank (2, 22) to said supply means (5, 41) through said supply line, and from said supply means (5, 41) to said first tank (2, 22) through said return line, preventing passage of fuel along said recirculating line (10, 30), when the vehicle speed is lower than said first threshold value and/or motor load is lower than said second threshold value; or making said first fuel passing from said first tank (2, 22) to said supply means (5, 41) through said supply line and then through a closed circuit comprising a part of said return line, said recirculating line (10, 30) and a portion of said supply line, permitting passage of said first fuel through said recirculating line (10, 30), so that said first fuel arrives again within said supply means (5, 41), when the vehicle speed is higher than said first threshold value and motor load is higher than said second threshold value, so as to prevent an excessive increase within said first tank caused by inlet within the first tank (2, 22) of the first fuel warm arriving from said supply means (5, 41).
Abstract:
Double powering injector 1 characterized by a cylindrical conical double seal sprayer 5 able to allow the alternative injection both of gas oil and gas using only one injection system, wherein the feeding switching to the sprayer alternatively from the rail 9 or the cylinder 8 and vice versa occurs by means of an outer valve 7 of "two way - two positions" type with electronic control 12 arranged upstream of the feeding line of the accumulation volume 10 and therefore of the sprayer 5, and having two inlet connectors 15 for two separated feeding lines, the one for feeding the control volume 11 and the other one for feeding the accumulation volume 10 and so the sprayer 5.
Abstract:
A triple fuel supply system for supplying a heavy fuel oil, a semi-light fuel, such as Marine Diesel Oil, a light fuel, such as Marine Gas Oil, or a mixture of two of those fuel types to a combustion unit is disclosed. Furthermore, methods for switching from heavy fuel operation to semi-light fuel operation and further to light fuel operation and vice versa are also disclosed. Finally, a method for retro-fitting an existing fuel supply system for updating it to a triple fuel supply system is disclosed.